Valve for gas-furnaces



(No Model.) 2 Sheets-Sheet 1. G. H. HOLTO'N. VALVE FOR GAS FURNACES.

No. 457,118. Patented Aug.4,1891.

in: ncnms PETiRs cm, mom'umo vusnmornu, u. c.

2 Sheets-Sheet- 2.

(No Model.)

0. H. HOLTON.

VALVE FOR GAS FURNACE-S.

No. 457,118 Patented Aug. 4,1891.

UNITED STATES PATENT OFFICE.

CHARLES H. HOLTON, OF POUGHKEEPSIE, NEW YORK.

VALVE FOR GAS-FURNACES.

SPECIFICATION forming part of Letters Patent No. 457,118, dated August4, 1891. Application filed August 7, 1890. Serial No. 361,328. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES H. HOLTON, a citizen of Canada, residing atPoughkeepsie, in the countyof Dutchess and State of New York, haveinvented certain new and useful Improvements in Valves for Gas-Furnaces;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled,

in the art to which it appertains to make and use the same. V

My invention relates to valves used in regenerative gas-furnaces andprovided with a butterfly or reversing plate for the purpose ofdirecting the heated gas alternately in opposite directions, as theneeds of the work require; and theobj ects of myimprovements are, first,to facilitate the placing and removal of the valves; second, to reduceto the greatest extent possible the cost of replacing or refitting theburned portions at the base of the valve, which are first to becomewarped and unfit for work, and, third, to provide means whereby aseparable base may be maintained securely in its normal position withreference to the upper portion of the valve as well as if it wereintegral with the upper portion. I attain these objects by the deviceillustrated in the accompanying drawings, in which Figure 1 is a faceView of my valve, showing the separable base and the upper portionplaced together in readiness for work. Fig. 2 is a vertical longitudinalsection out through line 2 2 of Fig. 1. Fig. 3 is a perspective view ofsegregated parts of my device, showing the dilferent positions of thebutterfly-plate by dotted lines; and Fig. i a sectional View of thevalve and a portion of the foundation of the furnace, showing thearrangement of the passages leading to and from the valve.

Similarletters refer to similar parts th roughout the several views.

In the drawings, A represents the central chamber of the upper portionof the valve, and a the flange near its top for the convenient supportof a connecting-pipe.

B represents the separable base portion of the chamber A, and preferablycorresponds with it in thickness and diameter, so that the edges f mayrest snugly upon the edges y when the parts are superimposed. b is an Drepresents a hood on either side of the central valve-chamber, intowhich or from which the gases are conveniently conducted by attaching asimilar hood. The lower edgesiot' I) are extended belowAon eitherside,as is best shown in Fig. 3,so that they rest on the base-flange b, andthe lugs e fit on either side of the several base-plate pins d for thepurpose of holding the parts A and B securely together in the properrelative position. It may be found convenient and is entirely consistentwith my invention to substitute for these pins and lugs a flange castupon I) and gand integral therewith and raised enough to cover thejoints at 7; and f to make them fire-tight, as well as to hold the upperportionA D seourely upon the base B. Under thehoods D the base 13 islowered, as shown at 71. in Figs. 1 and 3, for the purpose offacilitating the passage of the heated gases from and into the valve.The separable base permits of its being taken from underneath andanother base substituted by the raising of the upper portion afew incheswithout its entire removala distinct advantage in time and expense, aswill readily be seen. This base, which is separable in my device,constitutes the whole of that portion of the valve which is most quicklywarped by the intense heat of the gases, especially as they pass throughthe valve-chamber after coming from the furnace, base B being'made toextend far enough above the flange b toinclude as much of the metal ofthe valve-chamber as is ever likely to be Warped and burned by the heatof the passing gases. Base B may also be extended below the flange 7),as shown in Figs. 1 and 2, to give the base a firmer seat in thebrick-work of the furnace.

l-Ieretofore it has been necessary when the base of the valve became sowarped and burned by heat as to make an imperfect joint with the edge ofthe reversing-plate G to take p out and discard as useless the wholevalve at very great trouble and expense. By my device it is onlynecessary to remove the base, as shown in Fig. 3, and substitute anothercasting of a similar base at only about oneseventh of the cost of anentirely new valve. Not only does my device provide for this readysubstitution of the warpedor useless portion of the valve, but it alsoaffords as perfect and complete a valve as those heretofore made byreason of the use of the lugs e and pins "i, or an equivalent-e. g., aretaining-flange on the base to receive the upper portion. This mode offastening unites the parts so securely in their normal position that thetwo parts present all-the advantages of a single casting both instrength and utility, and in addition they afford a greater facility inremoval and subject the user to much less outlay for repairs, as hasbeen indicated, than do the ordinary valves hitherto used.

In Fig. 4 the valve is shown in position for operation. The valve shownin said figure may be either the air-valve or the gas-valve of thefurnace, it being provided with the cover 7c, which is raised to permitthe air or gas to enter the furnace. In the position of the plate 0shown, the air or gas passes through the left-hand passage E to thefurnace, and the heated mixture of air and gas coming from the furnacereturns to the valve through the right-hand passage F and passes fromthe valve through the passage G to the stack. It will be understood thatin the operation of the furnace the position of the plate 0 is reversedfrom time to time, and when reversed the air or gas goes to the furnacethrough the passage F and returns through the passage E. In either casethe heated mixture returning from the furnace passes over the lowerportion of the valve, so that it is this portion of it which becomesburned and quickly unfitted for use; but by the use of my invention thelower portion of the valve is readily removed and replaced without goingto the expense of discarding those parts which are not affected by theheat and substituting an entire new valve.

The hoods Z Z are attached to the sides of the valve to direct the airand gas to and from the passages E F.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A valve for gas-furnaces, consisting of a separable base, and anupper chamber fitted to rest accurately and firmly upon the base to forma single valve, as and for the purpose described.

2. In a valve for gas-furnaces, a separable base consisting of a platehaving a raised circular rib forming the base portion of the circularvalve-chamber, in combination with a corresponding upper circularvalve-chamber adapted to rest upon the base and containing a butterflyor reversing plate, substantially as set forth.

3. In a valve for gas-furnaces, a separable base, as shown, incombination with a corresponding upper chamber adapted to fit upon thecircular portion of the base and having downward-projecting ends fromthe valvehoods on either side to rest upon the base and engage by lugswith corresponding pins upon the base-flange for the purpose ofmaintaining the separate portions of the valve securely in place,substantially as and for the purpose specified.

In testimony whereof I aliix my signature in presence of two witnesses.

- CHARLES H. IIOLTON.

Witnesses:

IRVINE ELTING, SILAs Woman.

